The Audio Confidence test could not detect the audio board, or the audio board has not been installed on the system. Verify that the audio board has been installed on the system by executing the hinv(1M) command. The hinv(1M) output should be similiar to:

49% hinv | grep -i audio
Iris Audio Processor: version A2 revision 4.1.0

For additional information, see the hinv (1M) man page, and the Owners Guide. For additional questions or assistance, contact your local support provider.